Build power and lighting plans that account for voltage drop. Our voltage drop calculator helps you estimate maximum wire lengths based on gauge and load so your LED installations shine from start to finish.
| Drop | 10 AWG | 12 AWG | 14 AWG | 16 AWG | 18 AWG | 20 AWG | 22 AWG | 24 AWG | 26 AWG |
|---|---|---|---|---|---|---|---|---|---|
| Drop1% | - | - | - | - | - | - | - | - | - |
| Drop3% | - | - | - | - | - | - | - | - | - |
| Drop5% | - | - | - | - | - | - | - | - | - |
NEC Article 411: Low voltage circuits limited to 25A max (300W @ 12V, 600W @ 24V).
Wire Gauge Limits: 10 AWG for >20A, 12 AWG for >15A, 14 AWG for ≤15A.
ST Feature: Switch and Dimmer show identical values due to primary side dimmer compensation in QOM/QSET power supplies.
Nominal Voltage indicates the output voltage at each tap of the power supply. If Dimming is selected, the value reflects the reduced voltage caused by the dimmer.
NEC Article 411: Low voltage circuits limited to 25A max (300W @ 12V, 600W @ 24V).
Wire Gauge Limits: 10 AWG for >20A, 12 AWG for >15A, 14 AWG for ≤15A.
Nominal Voltage indicates the output voltage at each tap of the power supply. If Dimming is selected, the value reflects the reduced voltage caused by the dimmer.
NEC Article 411: Low voltage circuits limited to 25A max (300W @ 12V, 600W @ 24V).
Wire Gauge Limits: 10 AWG for >20A, 12 AWG for >15A, 14 AWG for ≤15A.
Nominal Voltage indicates the output voltage at each tap of the power supply. If Dimming is selected, the value reflects the reduced voltage caused by the dimmer.
Note: Lower voltage drop percentages (1%) provide better performance but require heavier gauge wire or shorter runs. Higher percentages (5%) allow longer runs but may affect LED performance.
